c# - How can I do async await in the repository pattern? -


i have code long running i/o bound perfect async/await . doing repository pattern , can not figure out how await in controller i'm getting object not contain awaiter method on code

 public class homecontroller : controller      {     private imainrepository _helper = null;      public homecontroller()     {         this._helper = new mainrepository();     }    public async task<string> aboutt()     {        // here error        object main = await _helper.top_five() ?? null;         if(main != null)         {             return main.tostring();         }         else         {             return null;         }     }  }

the method implementing works fine can see below. data out of database , return in string format. find way make object main = await _helper.top_five() ?? null; await otherwise mixing async synchronous code. suggestions great ...

    public async task<string> top_five()     {         try         {              using (npgsqlconnection conn = new npgsqlconnection("config"))             {                 conn.open();                 string results = null;                 npgsqlcommand cmd = new npgsqlcommand("select * streams limit 15)t", conn);                   using (var reader = await cmd.executereaderasync())                 {                     while (reader.read())                     {                          results = reader.getstring(0);                     }                      return  results;                 }             }         }         catch(exception e)         {             // log here             return null;         }      }

does work you?

object main = (await _helper.top_five()) ?? null;

notice ( , ) since need await method , check null.


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